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SNJ54ALS157AFK 参数 Datasheet PDF下载

SNJ54ALS157AFK图片预览
型号: SNJ54ALS157AFK
PDF下载: 下载PDF文件 查看货源
内容描述: 翻两番1 - OF- 2数据选择器/多路复用器 [QUADRUPLE 1-OF-2 DATA SELECTORS/MULTIPLEXERS]
分类和应用: 复用器
文件页数/大小: 20 页 / 726 K
品牌: TACHYONICS [ TACHYONICS CO,. LTD ]
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SN54ALS157A, SN54ALS158
SN74ALS157A, SN74ALS158, SN74AS157, SN74AS158
QUADRUPLE 1 OF 2 DATA SELECTORS/MULTIPLEXERS
Buffered Inputs and Outputs
Package Options Include Plastic
Small-Outline (D) Packages, Ceramic Chip
Carriers (FK), and Standard Plastic (N) and
Ceramic (J) 300-mil DIPs
SN54ALS157A, SN54ALS158 . . . J PACKAGE
SN74ALS157A, SN74ALS158,
SN74AS157, SN74AS158
. . .
D OR N PACKAGE
(TOP VIEW)
SDAS081C − APRIL 1982 − REVISED DECEMBER 1994
description
These data selectors/multiplexers contain
inverters and drivers to supply full data selection
to the four output gates. A separate strobe (G)
input is provided. A 4-bit word is selected from one
of two sources and is routed to the four outputs.
The
′ALS157A
and SN74AS157 present true
data. The
′ALS158
and SN74AS158 present
inverted data to minimize propagation delay time.
The SN54ALS157A and SN54ALS158 are
characterized for operation over the full military
temperature range of − 55°C to 125°C. The
SN74ALS157A, SN74ALS158, SN74AS157, and
SN74AS158 are characterized for operation from
0°C to 70°C.
A /B
1A
1B
1Y
2A
2B
2Y
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
CC
G
4A
4B
4Y
3A
3B
3Y
SN54ALS157A, SN54ALS158 . . . FK PACKAGE
(TOP VIEW)
1A
A/B
NC
V
CC
3
4
5
6
7
8
1B
1Y
NC
2A
2B
2 1 20 19
18
17
16
15
G
4A
4B
NC
4Y
3A
14
9 10 11 12 13
NC − No internal connection
FUNCTION TABLE
INPUTS
DATA
G
H
L
L
L
L
A /B
X
L
L
H
H
A
X
L
H
X
X
B
X
X
X
L
H
OUTPUT Y
′ALS157A
ALS157A
SN74AS157
L
L
H
L
H
′ALS158
ALS158
SN74AS158
H
H
L
H
L
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright
1994, Texas Instruments Incorporated
POST OFFICE BOX 655303
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251−1443
DALLAS, TEXAS 75265
2Y
GND
NC
3Y
3B
1